This article describes the implementation of an interface between RS9901 luminometer and EPSON laserjet printer,and the realization of the printing function of EPSON printer in the DOS operating system.

• 对 EPSON喷墨和激光打印机 ；在 RS990 1发光光度计的连接方法及打印功能的具体实现进行论述 ；解决了 RS990 1发光光度计中数据和图形的打印问题 .